Cool mist humidifiers with aromatherapy create a soothing atmosphere in your home. According to the Mayo Clinic, indoor humidity between 30% to 50% is ideal and can help soothe dry air problems of the skin, throat, and sinuses. Additionally, proper humidity levels can create an atmosphere for improved sleep and reduce static electricity from dry air. The Top Fill Ultrasonic Cool Mist Humidifier from Lasko provides quiet, soothing humidity for your room. The cool mist nozzle is adjustable to 360-degrees. The removable tank holds 3.5 L of water, so it will run up to 18 hours on the low setting. The electronic touch controls are simple to use and allow you to select from 3 mist settings and set the auto-off timer (between 1 and 7 hours). Monitor your water supply through the water level window, then easily refill at the large top opening. The humidifier will automatically shut off when the tank is empty. Regular maintenance is a breeze because there are no filters to replace, and the large opening allows you to easily clean the tank. Features a built-in scent tray for aromatherapy essential oils and a nightlight to gently illuminate your room while you sleep. Comes fully assembled.